A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

被引：3

作者：

Worrall, D. M. ^{[1
]}

Birkinshaw, M. ^{[1
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Tyndall Ave, Bristol BS8 1TL, Avon, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 467卷 / 03期

关键词：

galaxies: active; galaxies: clusters: general; galaxies: individual: (PKS B1416-493); galaxies: jets; radio continuum: galaxies; X-rays: galaxies: clusters; ACTIVE GALACTIC NUCLEI; X-RAY-EMISSION; MOLONGLO-SOUTHERN-4-JY SAMPLE MS4; DEEP CHANDRA OBSERVATIONS; MAGNETIC-FIELD STRENGTHS; JET-POWER; HOT ATMOSPHERES; QUASAR JETS; XMM-NEWTON; SKY-SURVEY;

D O I：

10.1093/mnras/stx275

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present new X-ray (Chandra) and radio (ATCA) observations of the z = 0.09 radio galaxy PKSB1416-493, amember of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT = 4.6-keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z = 0.1 is rare. The radio source was chosen for observation based on its intermediate FR I/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse-Compton X-ray emission. The jet power, at 5.3 x 10(44) erg s(-1), when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.

引用

页码：2903 / 2912

页数：10